Eugene h



(No Model.)

E. H. PBCK.

EXTENSION LAME FIXTURE.

Patented Sept. 4, 1888.

N. PETERS. mtu-ucrwggpbw. waudngion. D. c.

llnrrnn drains afrenrr Orricn.

EUGENE H. PECK, OF MERDEN, CONNECTICUT, ASSIGNOR TO THE MERIDEN BRONZECOMPANY, OF SAME PLACE.

EXTENSlON-LAMP FIXTURE.

SPECIFICATION forming part of Letters Patent No. 389,005, datedSeptember 4, 1888.

I A pplicaiion filed May '21. 1888. Serial No 74,467. (No niodelJ To allwwm, it may concern.' spends substantially to the internal diameter Beit known that I, EUGENE H. Piron, of of the outer tube, but so as tomove freely Meriden, in the conntyofNeW Haven andState therein as theinner tube, C, is raised or lowol' Connecticut, have invented a newlrnproveered. On one side of the shoe a recess, E, is 55 ment inExtension-Lamp Fixtures; and I do formed, opening against the innersurface of hereby declare the following. when taken in the outer tube.The bottom of the recess is connection with accompanying drawings andinclined from the lower end of the shoe upthe letters of referencemarked thereon, to be ward and toward the open side ofthe shoe, as al'ull, clear, and exact description of the saine, represented in Fig. 1.1o and which said drawings constitute part of Before introducing theshoe into the outer this specilication, and represent, intube aspherical roller or ball, F, is placed in Figure l, the invention asapplied to an adthe recess, the diameter of which is somewhat justablestandard resting upon the iloor; Fig. greater than the distance from theinner sur- 2, a transverse section through the shoe above face of theouter tube to the nearest point of 65 the roller; Fig. 3, an open sideview of the the inclined surface of the side of the recess in shoe; Fig.at, the invention as applied to atelthe shoe, and as represented in Fig.l. Becscopic adjustable tube or standard in the relow the roller asuitable spring, a, preferably verse position from that seen in Fig.l-thnt a wire spiral spring, is set, the spring resting is, as suspendedfrom the ceiling; Fig. 5, a upon the lower end of the recess, and theroller 7o 5o inodication. stands upon the upper end ot' the spring, andThis invention relates to an iniproveinentin so that the tendency of thespring is to force extension devices for lamps, such as are arthe rollerupward into the narrower portion ranged to be suspended from theceiling-as of the space between the inner surface of the chandcliers-orto rest upon the floor, and outer tube and the bottom ofthe recess inthe 7 5 such as consist of au outer tube with an inner shoe. The resultof this is that normally the tube or rod working telescopically therein,the inclined surface of the recess works between outer tube beingstationary either upon a base the ball and the side of the outer tubeoppo to rest upon the iloor or supported i'roin the site the opening ofthe recess-as a wedgeceiling, theinner tubeorrod carrying the lamp thetendency of which wedging is to force the Sc 3e or lamps and madeadjustable as to elevation roller against the outer tube upon the openby the movement ofthe lainp-supporting rod side of the recess, and asseen in Fig. l, but or tube within the outer tube. when the inner tubeis raised the wedge-like ln order to support the inner tube at any partof the shoe is withdrawn, or relieves the position to which it may beadj usted, some deroller to such an extent as to perinit thc inner viceor mechanism is necessary between the tube to rise with littleobstruction; but upon outer and inner tubes, which will interlock theany attempt to force the inner tube downward two, or so engage them thatthe adjustable the wedging of the shoe upon the roller betube will standat any point oi' elevation to cornes greater and so as to produce acrainp which it may be moved. It is to this engagbetween the inner andthe outer tube, so great 9o 1o ing mechanism that the inventionparticularly as to prevent the descent ol` the inner tube.

relates. To relieve the adjustable inner tube from this I firstillustrate the invention as applied to cramping operation, so that itmay be easily a standard for lamps and other purposes. moved downward, arod, G, is placed within A represents an outer tube, supported upon theinner tube, which extends down through 45 a suitable base, B, in avertical position. the upper end ofthe shoe, and so as to bear Withinthis outer tube the inner tube, C, is upon the ball or roller F. Froxnthis rod any arranged, so as to slide therein telescopically, suit-ablehandle, as H, is provided at a convenand as coinnion in this class ofstandards. To lent point, so that the rod may be forced downthc lowerend of the tube C the shoe D is seward, as indicatedin broken lines,Fig. l, and, Ico 5o curely fixed, or may be made a part of the inbearingupon the ball or roller, will force the ner tube. The diameter of theshoe correball or roller downwardin advance of the shoe,

inner tube from the friction which would nat-v urally occur by theupward pressure upon the ball from its spring. The ball orsphericalshaped roller stands free within the recessthat is, without xedaxis-and is therefore free to revolve in any direction. The result ofthis is that in adjustment the ball will constantly change its positionand present an ever-changing bearing-surface between the shoe and innertube. Consequently the wear which would necessarily follow a roller hungupon an axis is avoided.

The saine shoe applies to an extension device for chandeliers, as seenin Fig. 4, it only being necessary to invert the shoe from the positionin Fig. 1 to that seen in Fig. 4. In the latter case the outer tube, A,is fixed-to the ceiling, while the inner tube, C, carrying the lamps, orwhatever it may bc, below, hangs from the outer tube.

The adjustable portion of the standard is best made in the form of atube, as I have described, so that the rod may be placed within thetube, a common construction in this class of devices; but instead ofmaking the adjustable part tubular it may be made a solid rod,- as alsocommon in this class of devices, in which case the adjusting-rod will beintroduced between the inner rod and the outer tube, as seen in Fig. 5.

I am aware that standards consisting of a stationary tube and a tubetelescopically ad- `instable therein, combined with a device to 4oautomatically engage the inner tube with the the hand can beconveniently applied to break the connection, so automatically made7between the outer and the inner tube, have long been known in the art inlamp-fixtures and for other purposes, both in standards adapted to besupported upon the iioor and others adapted to be supported from theceiling. I therefore make no claim, broadly considered, to suchconstruction, my invention being for the peculiar construction of theparts, as hereinafter particularly recited; neither doIclairn, broadly,the employment of aball as the brake or engaging device between theadjustable and stationary part of the standard.

I claimrIhe combination of the stationary outer tube, A, the inneradjustable tube, C, theshoe D, attached to or made a part of the outertube, the said shoe being within the said outer tube, the said shoeconstructed with a recess open to the inner surface of the outer tubeupon one side, the side of the recess opposite .to the tube beinginclined longitudinally toward the open side of the shoe, a sphericalroller, F, within said shoe, the diameter of the said spherical rollerbeing greater than the least distance between the said inclined side ofthe shoe and the opposite side of the inner tube, a spring in the recessof the shoe and upon which the said roller rests, the tendency of thespring being to force the roller to the narrower portion of the recessin the shoe, and a rod, G, extending from said recess and terminating ina suitable handle for moving said rod, the said rod extending into saidrecess and so as to bear upon said ball opposite said spring,substantially as described.

EUGENE I-I. IECK.

Vitnesses:

Jol-IN E. EARLE, FRED C. EARLE.

